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  • 1 NYSE: GSSTSX: GSC

    Wassa Underground: Isometric View

    19500N

    19300N

    19100N

    18900N

    400 m

    24217DD006

    BS17-720-29

    BS17DD385D3

    BS17DD385D2

    BS17DD308MBS17DD385D4

    BS17DD315M

    BSDD347

    BSDD351

    BS17DD014A

    BS17DD012

    BS17DD003

    Decline as at Dec 31,

    2017

    B Shoot stopes

    Wassa Main Pit as at Dec 31,

    2017

    Grade Block model >1.9 g/t

    Inferred Mineral

    Resource

    N S

    Mother hole

    BS17DD385M

    4 daughter holes

    BS17-745-17

  • 2 NYSE: GSSTSX: GSC

    Wassa Underground: Plan View

    B Shoot stopes

    F Shoot stopes

    Decline

    19500N

    19300N

    19100N

    18900N

    F Shoot expected projection

    B Shoot expected projection

    Inferred Mineral Resource

    200m

    N

  • 3 NYSE: GSSTSX: GSC

    B Shoot South Drilling: 19500 N

    19500 N

    • Two holes, BSDD347 and BSDD351, are existing holesthat were re-entered with a diamond drill rig and theholes extended

    • These two holes were targeting the F Shoot, which wasthought to project into the footwall of the B Shoot

    • Both of these holes intersected dioritic intrusive rocks,where the F Shoot was interpreted to be

    • Further geological work is needed to determine thegeometry of these intrusive bodies

    BSDD34722.6m @ 4.2g/t

    [email protected]/t

    19500 N

    B Shoot

    BSDD347No significant intersections

    BSDD351Assays Pending

    W E

    [email protected] g/t

  • 4 NYSE: GSSTSX: GSC

    B Shoot South Drilling: 19300 N

    19300 N

    • Drilling on this section was targeting the F Shootprojection in the footwall of the B shoot zone

    • One new hole, BS17DD386M, and one historicdeepened hole, BSDD308M, were drilled ~300 m apartto test the F Shoot structure. Both holes intersectedwhat is interpreted to be the target

    • Additional drilling is planned for 2018 to test betweenthese two intersections

    BSDD308M23.7m @9.6g/t

    BSDD308D113.4m @ 6.0g/t

    [email protected]/t

    Planned hole

    19300N

    BSDD308M7.4 m @3.1 g/t

    BS17DD386M6.4 m @ 3.2 g/t

    B Shoot

    W E

  • 5 NYSE: GSSTSX: GSC

    B Shoot South Drilling: 19100N

    BSDD315M70.5m @ 5.9g/t

    BSDD315M60.1m @ 3.4g/t

    19100 N

    • One hole was drilled ~285m up dip of the previoushigh grade intersection in historic hole BSDD315M

    • Hole BS17DD389M was drilled to test the zone~85m above hole BSDD315M – results are pending

    • Two additional daughter holes are planned to testdown dip of hole BSDD315M

    Planned hole

    BS17DD389MAssays Pending

    19100N

    BS17DD387M6.6 m @ 1.1 g/t

    W E

  • 6 NYSE: GSSTSX: GSC

    B Shoot South Drilling: 18900 N

    BS17DD386M23.8m @6.1g/t21.7m @ 5.3g/t

    [email protected]/t

    BS17DD386D115.9m @4.3g/t

    Planned holes

    BS17DD386D35.0m @ 5.5g/t

    B Shoot

    F Shoot

    18900N

    BS17DD386D315.0m @ 3.8 g/t8.1m @ 3.6 g/t

    [email protected] g/t

    Currently Drilling

    [email protected]/t

    18900 N

    • Five holes drilled on the southern moststep out fence, testing F Shootmineralization

    • Currently drilling is underway to test BShoot horizon and F Shoot at depth

    • Hole BSDD386D3 intersected widestzone of +4 g/t Au mineralization todate on Wassa Property

    W E

  • 7 NYSE: GSSTSX: GSC

    242 Section FW

    24217DD0066.8m @ 8.2g/t

    WUG Pan 1 Stopes

    • 242 FW target discovered in 2017 – new footwall horizon

    • Located in western limb of Wassa deposit scale fold structure

    • Drilling planned for 2018 to test this zone further

    Planned DD holes

    Wassa Underground

    Wassa Plan View

    Drill Section 8900 WE

    N S